Sundquist, Jan. “From Focus on Price to the Pyramid of Innovation, Information, Cooperation, Value and Trust: A Success Story of Five Swedish Building Material Manufacturers”. Construction Economics and Building 10, no. 1-2 (1): 132 - 143. Accessed May 3, 2024. https://epress.lib.uts.edu.au/journals/index.php/AJCEB/article/view/1595.